Youichi Inomata

This inventor holds 13 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Global Storage Technologies Japan, Ltd.. Active years: 1994-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Youichi Inomata. Retrieved from https://idiyas.com/inventor/youichi-inomata

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 13

% Patents Active = 69.2

Average Co-Inventor Count = 7.0

ph-index = 8

Forward Citations = 159(Granted Patents)

Company Filing History:

Hitachi Global Storage Technologies Japan, Ltd.

patents

Years Active: 1994-2007

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7259936 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2007-08-21),

2. 7035049 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2006-04-25),

3. 6801397 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2004-10-05),

4. 6577472 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture (2003-06-10),

5. 6303205 - Magnetic disk including protective layer having surface with protrusions, and substrate therefor (2001-10-16),

6. 6096445 - Substrate for a magnetic recording medium, the magnetic recording (2000-08-01),

7. 5930073 - Magnetic disk including protective layer having surface with magnetic (1999-07-27),

8. 5773124 - Magnetic recording medium comprising a protective layer having specified (1998-06-30),

9. 5690838 - Magnetic recording medium and process for producing same (1997-11-25),

10. 5656349 - Magnetic disk, method of manufacturing the same and magnetic disk (1997-08-12),

11. 5504646 - Magnetic disk including protective layer having surface with protusions (1996-04-02),

12. 5411630 - Magnetic disk manufacturing method (1995-05-02),

13. 5280401 - Magnetic recording medium, method for producing same and magnetic (1994-01-18),

Title: The Innovative Contributions of Youichi Inomata

Introduction

Youichi Inomata is a prominent inventor based in Odawara, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 13 patents. His work has been instrumental in advancing the performance and reliability of magnetic storage devices.

Latest Patents

Inomata's latest patents include a glass substrate for a magnetic disk, which is designed to enhance the stability and texture of magnetic disks. This innovative substrate contains a transition metal and is subjected to zone texturing through laser irradiation. As a result, it exhibits high mechanical strength without the need for chemical strengthening. The glass substrate has a transmittance of 10% or less for light in the wavelength range of 300 to 2000 nm, and the surface roughness of the information recording surface is 2.0 nm or less. Additionally, the substrate may also include a rare earth metal element, further enhancing its properties.

Career Highlights

Throughout his career, Inomata has worked with notable companies such as Hitachi, Ltd. and Hitachi Global Storage Technologies Japan, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in magnetic disk technology.

Collaborations

Inomata has collaborated with esteemed colleagues, including Hiroshi Yashiki and Yoshiki Kato. Their combined expertise has contributed to the successful development of advanced technologies in the field.

Conclusion

Youichi Inomata's contributions to magnetic disk technology have had a lasting impact on the industry. His innovative patents and collaborations with leading companies and colleagues highlight his role as a key figure in advancing storage technology.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]